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Significant Accounting Policies - Impact of the Adoption of ASC 606 on consolidated Balance Sheet (Table) (Details) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Assets |  |
Trade accounts receivable | $ 24,708 | $ 18,521
Other current assets | 5,638 | 5,157
Liabilities |  |
Deferred revenue | 6,523 | 7,229
Accrued liabilities | 11,475 | 10,521
Balances without Adoption of ASC 606 |  |
Assets |  |
Trade accounts receivable | 27,212 |
Other current assets | 3,098 |
Liabilities |  |
Deferred revenue | 5,231 |
Accrued liabilities | 11,495 |
Effect of Adoption of ASC 606 |  |
Assets |  |
Trade accounts receivable | (2,504) | (2,383)
Other current assets | 2,540 | 1,660
Liabilities |  |
Deferred revenue | (1,292) | (1,137)
Accrued liabilities | $ 20 | $ 3

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- Definition Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130549-203045 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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